Which of the following statements isTRUE? D₁: The decomposition of the schema R(A, B, C) into R₁ (A, B) and R₂ (A, C) is always lossless. D₂: The decomposition of the schemal R(A, B, C, D, E) having AD B, C → DE, B → AE and AE → C, into R₁ (A, B,D) and R₂ (A, C, D, E) is lossless.
Which of the following statements isTRUE? D₁: The decomposition of the schema R(A, B, C) into R₁ (A, B) and R₂ (A, C) is always lossless. D₂: The decomposition of the schemal R(A, B, C, D, E) having AD B, C → DE, B → AE and AE → C, into R₁ (A, B,D) and R₂ (A, C, D, E) is lossless.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Which of the following statements isTRUE?
D₁: The decomposition of the schema R(A, B, C) into R₁ (A, B) and R₂ (A, C) is always lossless.
D₂: The decomposition of the schemal R(A, B, C, D, E) having AD B, C → DE, B → AE and AE → C, into R₁ (A, B,D) and R₂ (A, C, D, E) is lossless.
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